How to get input to list from user in Scala?

Counting Change

Write a recursive function that counts how many different ways you can make change for an amount, given a list of coin denominations. For example, there are 3 ways to give change for 4 if you have coins with denomination 1 and 2: 1+1+1+1, 1+1+2, 2+2.

Do this exercise by implementing the countChange function in Main.scala. This function takes an amount to change, and a list of unique denominations for the coins. Its signature is as follows:

def countChange(money: Int, coins: List[Int]): Int

Once again, you can make use of functions isEmpty, head and tail on the list of integers coins.

Hint: Think of the degenerate cases. How many ways can you give change for 0 CHF(swiss money)? How many ways can you give change for >0 CHF, if you have no coins?

I tried to do like this, but this error occured

object main {
  def countChange(money: Int, coins: List[Int]): Int = {
    if (money == 0)
      1
    else if (money > 0 && !coins.isEmpty)
      countChange(money - coins.head, coins) + countChange(money, coins.tail)
    else
      0
  }
  def main(args: Array[String]): Unit = {
    var money = scala.io.StdIn.readInt()
    var coins = scala.io.StdIn.readInt()
    println(countChange(money, coins))
  }
}

type mismatch;
found   : Int
required: List[Int]
println(countChange(money, coins))